172372799 has 4 divisors (see below), whose sum is σ = 173898336. Its totient is φ = 170847264.

The previous prime is 172372793. The next prime is 172372817. The reversal of 172372799 is 997273271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172372799 - 2¹⁶ = 172307263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172372793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762599 + ... + 762824.

It is an arithmetic number, because the mean of its divisors is an integer number (43474584).

Almost surely, 2^172372799 is an apocalyptic number.

172372799 is a deficient number, since it is larger than the sum of its proper divisors (1525537).

172372799 is a wasteful number, since it uses less digits than its factorization.

172372799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525536.

The product of its digits is 333396, while the sum is 47.

The square root of 172372799 is about 13129.0821842199. The cubic root of 172372799 is about 556.5312786232.

The spelling of 172372799 in words is "one hundred seventy-two million, three hundred seventy-two thousand, seven hundred ninety-nine".